DOI: 10.11799/ce201803015
Surrounding rock deformation control technology for gob-side entry driving using deep borehole blasting roof cutting
ZHANG Shu-jun
XU Xue-feng
Abstract：In order to solve the problem of serious deformation of roadway driving along goaf in Jiulishan Coal Mine according to the serious mining-excavation replacement, the engineering technology of deep borehole blasting for roof cutting and pressure relief is applied in transportation roadway of No.15071 mining face. Based on the methods of theoretical analysis, field experiment and mine pressure observation, it is found that, deep borehole blasting for roof cutting and pressure relief can control serious deformation of gob-side entry driving. The parameters and process of blasting and bursting charge are researched. The conclusions show that deep borehole blasting for roof cutting in transportation roadway of No.15071 mining face has achieved favorable pressure relief role to the roadway driving along goaf in No.15091 mining face, the roadway confining pressure has been decreased, the serious deformation of roadway has been effectively controlled, and roadway support quality has been improved compared to roadway without roof cutting.
Keywords：deep borehole blastingroof cutting and pressure reliefgob-side entry drivingsurrounding rocL control
Publication Date：2018-03-02
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 57-59,62 )